National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Light Snow Fog/Mist

30°F

-1°C

Humidity 98%
Wind Speed SW 3 mph
Barometer 30.01 in
Dewpoint 29°F (-2°C)
Visibility 1.25 mi
Last update 17 Jan 9:15 am EST
Extended Forecast for

2 Miles W Coatesville PA

Winter Weather Advisory January 17, 09:34am until January 17, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 17, 09:34am until January 17, 04:00pm

    NOW until 4:00pm Sat

    Winter Weather Advisory

  • Today

    High: 38 °F

    Snow then
    Snow Likely

  • Tonight

    Tonight: A slight chance of snow after 4am. Increasing clouds, with a low around 27. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of snow, mainly between 7am and 1pm. Mostly cloudy, with a high near 33. Northwest wind around 5 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 33 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. West wind around 5 mph.

    Low: 17 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 33. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 20.

    High: 20 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Today
Snow, mainly before 2pm. High near 38. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A slight chance of snow after 4am. Increasing clouds, with a low around 27. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Sunday
A chance of snow, mainly between 7am and 1pm. Mostly cloudy, with a high near 33. Northwest wind around 5 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday Night
Partly cloudy, with a low around 17. West wind around 5 mph.
M.L.King Day
Sunny, with a high near 33. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Sunny, with a high near 20.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Coatesville PA
 39.99°N 75.85°W (Elev. 597 ft)
Last Update:
9:30 am EST Jan 17, 2026
Forecast Valid:
9am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation